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arXiv · 2311.07481

HESS J1809-193: Gamma-Ray Emission by Cosmic Rays from Past Explosion

Sovan Boxi·Nayantara Gupta
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Abstract

The very high energy gamma-ray source HESS J1809-193 has been detected by the LHAASO and HAWC observatory beyond 100 TeV energy. It is an interesting candidate for exploring the underlying mechanisms of gamma-ray production due to the presence of supernova remnants, pulsar and molecular clouds close to it. We have considered the injection of the energetic cosmic rays from a past explosion, whose reminiscent may be SNR G011.0-00.0, which is located within the extended gamma-ray source HESS J1809-193. We explain the multi-wavelength data from the region of HESS J1809-193 with synchrotron, inverse Compton, bremsstrahlung emission of cosmic ray electrons and secondary gamma-ray production in interactions of cosmic ray protons with the cold protons in the local molecular clouds within a time-dependent framework including the diffusion loss of cosmic rays. The observational data has been modelled with the secondary photons produced by the time-evolved cosmic ray spectrum, assuming the age of the explosion is 4500 years.

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Sovan Boxi, Nayantara Gupta. 2023-11-13. HESS J1809-193: Gamma-Ray Emission by Cosmic Rays from Past Explosion. https://doi.org/10.3847/1538-4357%2Fad0da9

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